iOS - 下载本地文件

将文件放入项目中（文件名不能为中文）

NSString *fileNameStr = @"Authorization";

    NSString *path = [[NSBundle mainBundle] pathForResource:fileNameStr ofType:@"doc"];

    NSString *encodedString = [path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];


    NSURL *url = [NSURL fileURLWithPath:encodedString];

    NSArray *dataAry = @[url];
    UIActivityViewController *activityController=[[UIActivityViewController alloc]initWithActivityItems:dataAry applicationActivities:nil];
    [self.navigationController presentViewController:activityController animated:YES completion:nil];